9.1: Popover basic example
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**Primary Actor**: User

**Scope**: Ngx-bootstrap DEMO / BS version 3&4

**Goal**: Show user basic popover functionality

Main success scenario:
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1. User opens Popover demo page
2. User clicks on Basic sub-menu
3. User see clickable button "Live demo"
4. When user clicks on "Live demo", then popover-container shown on the top of button with specific text
5. When user clicks on "Live demo" again, then popover-container disappeared

Variations:
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2*. User scroll to Basic sub-menu